CN106018413A - Product appearance detection device and method - Google Patents
Product appearance detection device and method Download PDFInfo
- Publication number
- CN106018413A CN106018413A CN201610316205.XA CN201610316205A CN106018413A CN 106018413 A CN106018413 A CN 106018413A CN 201610316205 A CN201610316205 A CN 201610316205A CN 106018413 A CN106018413 A CN 106018413A
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- light source
- product appearance
- ccd camera
- inspection device
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/8806—Specially adapted optical and illumination features
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
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- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
The invention provides a product appearance detection device and method. The device comprises a detection module and an analysis control module, wherein the detection module comprises a CCD camera, a lens and an illuminating system which are connected in sequence and arranged coaxially, and the analysis control module comprises a data analysis system and a control system which are in data signal connection with the CCD camera; the illuminating system comprises a spherical integral light source, a coaxial light source, a connector and a distance regulator, the coaxial light source is connected with the lens, the connector is connected with the spherical integral light source and the coaxial light source, the distance regulator is used for regulating the height of the illuminating system, an opening is formed in the bottom of the spherical integral light source, and the opening covers a product to be detected. By adopting the double-telecentricity lens, the high-precision CCD camera and the combined diffuse reflection illuminating system, defect interference caused by an abrasive blasting material is avoided.
Description
[technical field]
The present invention relates to surface defects detection, particularly, relate to a kind of product appearance inspection device and detection method thereof.
[background technology]
Prior art, for the detection of phone housing sandblasting material, needs clearly to present lacking of sandblasting phone housing surface
Falling into, the shot blasting particles the to be avoided impact on detection, minimum defects detection precision needs to reach 0.008mm.
But being because handset size, material, shape disunity, existing detection device cannot complete multiple different chi simultaneously
Very little, unlike material, difform high precision test problem, and it is disposable to complete polytype defect in piece image
The problem of detection.
Therefore, it is necessary to provide a kind of product appearance inspection device and detection method thereof.
[summary of the invention]
It is an object of the invention to provide a kind of product appearance inspection device and detection method thereof.
Technical scheme is as follows: a kind of product appearance inspection device, including detection module and analysis and Control module,
Described detection module includes being sequentially connected with and the CCD camera of concentric setting, camera lens, illuminator, described analysis and Control module
Including the data analysis system being connected with described CCD camera data signal and control system, described illuminator includes ball integration
Light source, coaxial light source, adapter and range adjuster, described coaxial light source is connected with described camera lens, and described adapter connects institute
Stating ball integration light source and coaxial light source, described range adjuster is for regulating the height of described illuminator, described ball integral light
Having opening bottom source, described opening is covered in product to be detected.
Preferably, described camera lens is doubly telecentric camera lens.
Preferably, described CCD camera is connected on telecentric lens, and it uses 3000W black-white CCD camera.
Preferably, self object distance of described camera lens is 263mm, and the depth of field is 9mm, so detectable substance surface needs distance camera lens to exist
Between 267.5mm-258.5mm.
Preferably, described openings of sizes is 72mm*92mm, and described coaxial light source light-emitting area size is 70mm*90mm.
Preferably, described ball integration light source includes 5 passages altogether, is respectively positioned at the ball integration normal channel of bottommost, and
Other is 15 °, 30 °, 45 °, the 85 ° passages carrying out arranging according to angle respectively.
Preferably, described ball integration light source includes that light filling band, described light filling band are located on the bottom of described ball integration light source.
The present invention also provides for a kind of product appearance detection method, comprises the steps:
Step 1: provide product to be detected, is placed on described open bottom；
Step 2: described control system controls described CCD camera and the surface to be detected of described product to be detected is carried out region
Divide；
Step 3: described control system controls described detection module and depends on described surface to be detected according to the region divided
Secondary shoot；
Step 4: shooting results is transmitted to data analysis system by described CCD camera, and described data analysis system is to shooting
Result carries out data analysis, output detections result.
Preferably, described control system controls described illuminator in the same area employing different bright darkness of three kinds of light sources
Export with compound mode.
There is advantages that
1, doubly telecentric camera lens, in high precision CCD camera, combination diffuse-reflectance illuminator is used to solve sandblasting material to defect
Interference.
2, main employing multistation shooting and subregion shooting solve various sizes of detection.
3, use combination lighting system, use multichannel independently to control light source at light source internal, use for unlike material
Different light intensity and angle illumination.
4, increase light filling light belt bottom ball integration, form 360 ° of annulus and carry out light filling, enter ball integration according to detectable substance high
Degree light source can carry out angular adjustment, it is ensured that the uniformity of illumination.
5, same position uses continuous shooting mode, and light source luminescent angle of every time taking pictures and brightness is changed, can with multi-angle,
Many brightness carry out imaging, it is ensured that defect is not omitted.
6, have employed successively scanning detection technology, user can select detection module according to actually detected needs, for same
One width picture can select multiple detection module to combine.
[accompanying drawing explanation]
Fig. 1 is the structure chart of product appearance inspection device of the present invention.
[detailed description of the invention]
The invention will be further described with embodiment below in conjunction with the accompanying drawings.
Referring to Fig. 1, the open a kind of product appearance inspection device 100 of the present invention, including detection module 1 and analysis and Control mould
Block (figure does not regards).
Described detection module 1 includes being sequentially connected with and the CCD camera 11 of concentric setting, camera lens 13, illuminator 15.Institute
State illuminator 15 and include ball integration light source 151, coaxial light source 153, adapter 155 and range adjuster 157, described axis light
Source 153 is connected with described camera lens 13, and described adapter 155 connects described ball integration light source 151 and described coaxial light source 153, institute
State range adjuster 157 for regulating the height of described illuminator 15, bottom described ball integration light source 151, have opening 1511,
Described opening 1511 is covered in product to be detected.
Concrete, the gap between described ball integration light source 151 and described coaxial light source 153 can not be more than 1mm, described ball
Integration light source 151 top is internal is sphere, and outside is a plane, and described opening 1511 size is 72mm*92mm, and axis light is sent out
Bright finish size is 70mm*90mm.
In the present embodiment, described camera lens 13 is doubly telecentric camera lens；Described CCD camera 11 is connected on telecentric lens, its
Using 3000W black-white CCD camera, resolution is 6576*4384, and minimum image elemental size is 5.5 μm, uses 1/2 sub-pixed mapping precision
Can reach 0.007mm.
Described self object distance of camera lens 13 is 263mm, and the depth of field is 9mm, so detectable substance surface needs distance camera lens 13 to exist
Between 267.5mm-258.5mm.
Described ball integration light source 151 includes 5 passages altogether, is respectively positioned at the ball integration normal channel of bottommost, and other
It is 15 °, 30 °, 45 °, the 85 ° passages carrying out arranging according to angle respectively, uses multichannel independently to control light source at light source internal,
Different light intensity and angle illumination is used for unlike material.
In cambered surface detects, can there is 2 light source channels, 1# light source channels and water in described ball integration light source 151 in bottom
Flat axle is 15 ° of angles, and lamp bead emission area is 30 °, and 2# light source and trunnion axis present 45 ° of angles, and lamp bead is launched angle and is
30 °, the two passage can be beaten bright with plane intersection and top cambered surface so that it is maintaining uniform illumination, then by 3# light and top
Coaxial light source 153 illuminate, it is ensured that side integral illumination is uniform；Telecentric lens in the side edge 9mm depth of field can ensure that simultaneously
The blur-free imaging at edge.
Simultaneously in described illuminator 15, use wavelength be the red light of 700nm as key lighting light source, according to light
Light wave property inside wave particle dualism, the small gap between shot blasting particles can effectively avoid over, tiny flaw simultaneously
Really can with imaging out.
Described ball integration light source 151 includes that light filling band 1513, described light filling band 1513 are located on described ball integration light source 151
Bottom.Type becomes 360 ° of annulus to carry out light filling, enters described ball integration light source 151 according to detectable substance and can carry out angular adjustment, protects
The uniformity that license is bright.
Described analysis and Control module includes the data analysis system being connected with described CCD camera 11 data signal and controls system
System.
Described data analysis system has increased Script module in existing module, and this is partially in semi-open state, algorithm
Engineer or non-algorithm engineering Shi Douke edit in this part, and algoritic module shows with text document, can directly exist
The inside is edited, and being loaded into existing algoritic module after editor can use.
The problem of the width picture number of drawbacks run in detecting for appearance defect, described data analysis system have employed
Successively scanning detection technology, user can select detection module according to actually detected needs, can select for same width picture
Multiple detection modules combine, it is only necessary to above beating hooking, concrete each module parameter can independently be configured, no
With station, different parameters can also be set.
In algorithm frame program, have an algoritic module interface, can inside carry out algoritic module interpolation, add
Directly can carry out proof of algorithm after success inside framework, inside program frame Script can according to the actual requirements
Algoritic module is placed on inside text text, and the content inside text needs to write according to normal software program module mode,
The ready-made algoritic module of Halcon can directly invoke module title and achieve that writing of corresponding module.Even if being non-algorithm personnel
Corresponding code can also be inside write according to the requirement of algorithm engineering teacher.Determine again algoritic module according to test case be
No it is packaged.
Add algoritic module detection level options in algoritic module part, can need to enter at corresponding position according to detection
Row is beaten hook, is beating clicking on save button after hooking, there will be corresponding text script, double-click the foot of text under software catalog
The parameter of current algoritic module just can inside be modified by this, if need not current detection module, removes hook
, during actually detected, system detects according to the sequencing of the algoritic module of actual selection, when previous mould
Block detects the position of NG, does not detects this part inside next module, is sequentially completed the detection of all corresponding modules.
Invention additionally discloses a kind of product appearance detection method, it is characterised in that comprise the steps:
Step 1: provide product to be detected, is placed on described open bottom.
Step 2: described control system controls described CCD camera and the surface to be detected of described product to be detected is carried out region
Divide.
Step 3: described control system controls described detection module and depends on described surface to be detected according to the region divided
Secondary shoot.
This telecentric lens telecentricity used, less than 0.06, distorts less than 0.08%, and field range 94mm*64mm is clapped
The phone housing taking the photograph 4.7 inches can shoot for 2 times, and the phone housing shooting 5.5 inches can complete for 3 times；
Same position uses 3 continuous shooting modes, and light source luminescent angle of every time taking pictures and brightness are changed, can be polygonal
Degree, many brightness carry out imaging, it is ensured that defect is not omitted；
Concrete, is first taken pictures in first area, during to picture processing, equipment is simultaneously moved into the secondth district
Territory, takes pictures to it again, has detected the detection of whole mobile phone successively.
Step 4: shooting results is transmitted to data analysis system by described CCD camera, and described data analysis system is to shooting
Result carries out data analysis, output detections result；
Described control system controls described illuminator and uses with the different bright darkness of three kinds of light sources and combination in same area
Mode exports；
Concrete, different defects are disposably detected, the different bright darkness of three kinds of light sources and compound mode can be used to examine
Survey, under uniform normal brightness, mainly solve conventional bruising wound, touch the detection such as scratch, cull；Split is carried out at uniform high-brightness
Defects detection, predominantly gap, black line etc.；Carry out light defects detection in low-light level details in a play not acted out on stage, but told through dialogues, the most slightly damage, scratch, sand
Grain etc..After detectable substance is by equipment moving to field of detection scope, phase chance carries out three times and takes pictures, after having taken pictures automatically every time
Carry out light source change, after having taken pictures for three times, disposably detect output detections result.
In sum, there is advantages that
1, doubly telecentric camera lens, in high precision CCD camera, combination diffuse-reflectance illuminator is used to solve sandblasting material to defect
Interference.
2, main employing multistation shooting and subregion shooting solve various sizes of detection.
3, use combination lighting system, use multichannel independently to control light source at light source internal, use for unlike material
Different light intensity and angle illumination.
4, increase light filling light belt bottom ball integration, form 360 ° of annulus and carry out light filling, enter ball integration according to detectable substance high
Degree light source can carry out angular adjustment, it is ensured that the uniformity of illumination.
5, same position uses continuous shooting mode, and light source luminescent angle of every time taking pictures and brightness is changed, can with multi-angle,
Many brightness carry out imaging, it is ensured that defect is not omitted.
6, have employed successively scanning detection technology, user can select detection module according to actually detected needs, for same
One width picture can select multiple detection module to combine.
Above-described is only embodiments of the present invention, it should be noted here that for those of ordinary skill in the art
For, without departing from the concept of the premise of the invention, it is also possible to make improvement, but these belong to the protection model of the present invention
Enclose.
Claims (9)
1. a product appearance inspection device, it is characterised in that include detection module and analysis and Control module, described detection module
Including being sequentially connected with and the CCD camera of concentric setting, camera lens, illuminator, described analysis and Control module includes and described CCD
Camera data signal connect data analysis system and control system, described illuminator include ball integration light source, coaxial light source,
Adapter and range adjuster, described coaxial light source is connected with described camera lens, described adapter connect described ball integration light source and
Coaxial light source, described range adjuster, for regulating the height of described illuminator, has opening, institute bottom described ball integration light source
State opening and be covered in product to be detected.
Product appearance inspection device the most according to claim 1, it is characterised in that: described camera lens is doubly telecentric camera lens.
Product appearance inspection device the most according to claim 2, it is characterised in that: described CCD camera is connected to telecentric mirror
On head, it uses 3000W black-white CCD camera.
Product appearance inspection device the most according to claim 1, it is characterised in that: self object distance of described camera lens is 263mm,
The depth of field is 9mm, so detectable substance surface needs distance camera lens between 267.5mm-258.5mm.
Product appearance inspection device the most according to claim 2, it is characterised in that: described openings of sizes is 72mm*92mm,
Described coaxial light source light-emitting area size is 70mm*90mm.
Product appearance inspection device the most according to claim 1, it is characterised in that: described ball integration light source includes that 5 lead to altogether
Road, is respectively positioned at the ball integration normal channel of bottommost, and other is 15 °, 30 °, 45 °, 85 ° according to angle respectively and arranges
The passage of cloth.
Product appearance inspection device the most according to claim 1, it is characterised in that: described ball integration light source includes light filling
Band, described light filling band is located on the bottom of described ball integration light source.
8. a product appearance detection method, application claim 1 is examined to the product appearance described in any one in claim 6
Survey device, it is characterised in that comprise the steps:
Step 1: provide product to be detected, is placed on described open bottom；
Step 2: the described CCD camera of described control system control carries out region to the surface to be detected of described product to be detected and draws
Point；
Step 3: described control system controls described detection module and enters described surface to be detected successively according to the region divided
Row shooting；
Step 4: shooting results is transmitted to data analysis system by described CCD camera, and described data analysis system is to shooting results
Carry out data analysis, output detections result.
Product appearance detection method the most according to claim 8, described control system controls described illuminator identical
Region uses and exports by the different bright darkness of three kinds of light sources and compound mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610316205.XA CN106018413A (en) | 2016-05-12 | 2016-05-12 | Product appearance detection device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610316205.XA CN106018413A (en) | 2016-05-12 | 2016-05-12 | Product appearance detection device and method |
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| Publication Number | Publication Date |
|---|---|
| CN106018413A true CN106018413A (en) | 2016-10-12 |
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ID=57099761
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610316205.XA Pending CN106018413A (en) | 2016-05-12 | 2016-05-12 | Product appearance detection device and method |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106525867A (en) * | 2016-12-29 | 2017-03-22 | 重庆市江津区恩聪机械厂 | Visual detection device of air cylinder shell defect detection system |
| CN106770307A (en) * | 2016-09-27 | 2017-05-31 | 西京学院 | A kind of electronic product appearance surfaces defect detecting device and its detection method |
| CN107589121A (en) * | 2017-09-12 | 2018-01-16 | 苏州富锐联自动化设备有限公司 | CDD detection components include vision-based detection lighting mechanism |
| CN108051453A (en) * | 2017-12-05 | 2018-05-18 | 楚天科技股份有限公司 | It is a kind of to be used for the visible detection method with different depth color products |
| CN108896579A (en) * | 2018-06-27 | 2018-11-27 | 湖南科创信息技术股份有限公司 | The full view planar defect detection system of component/material surface based on integral cage illumination |
| CN109490311A (en) * | 2018-10-25 | 2019-03-19 | 武汉精立电子技术有限公司 | Backlight panel defect detecting system and method based on multi-angled shooting |
| CN109813725A (en) * | 2019-04-02 | 2019-05-28 | 东莞博美特自动化科技有限公司 | A kind of large scale glue defect inspection method |
| CN110286129A (en) * | 2019-07-12 | 2019-09-27 | 创新奇智(广州)科技有限公司 | Lighting device for magnetic shoe detection and the detection system for magnetic shoe detection |
| CN110470349A (en) * | 2019-09-20 | 2019-11-19 | 深圳市鑫荣精工科技有限公司 | A kind of precision CNC converted products quality determining method |
| CN113218961A (en) * | 2021-04-21 | 2021-08-06 | 中国科学院光电技术研究所 | Substrate defect detection device and method |
-
2016
- 2016-05-12 CN CN201610316205.XA patent/CN106018413A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106770307A (en) * | 2016-09-27 | 2017-05-31 | 西京学院 | A kind of electronic product appearance surfaces defect detecting device and its detection method |
| CN106525867A (en) * | 2016-12-29 | 2017-03-22 | 重庆市江津区恩聪机械厂 | Visual detection device of air cylinder shell defect detection system |
| CN107589121A (en) * | 2017-09-12 | 2018-01-16 | 苏州富锐联自动化设备有限公司 | CDD detection components include vision-based detection lighting mechanism |
| CN108051453A (en) * | 2017-12-05 | 2018-05-18 | 楚天科技股份有限公司 | It is a kind of to be used for the visible detection method with different depth color products |
| CN108896579A (en) * | 2018-06-27 | 2018-11-27 | 湖南科创信息技术股份有限公司 | The full view planar defect detection system of component/material surface based on integral cage illumination |
| CN108896579B (en) * | 2018-06-27 | 2024-04-16 | 湖南科创信息技术股份有限公司 | Full view surface defect detection system based on integral cage illumination for component/material surface |
| CN109490311B (en) * | 2018-10-25 | 2021-09-10 | 武汉精立电子技术有限公司 | Backlight panel defect detection system and method based on multi-angle shooting |
| CN109490311A (en) * | 2018-10-25 | 2019-03-19 | 武汉精立电子技术有限公司 | Backlight panel defect detecting system and method based on multi-angled shooting |
| CN109813725A (en) * | 2019-04-02 | 2019-05-28 | 东莞博美特自动化科技有限公司 | A kind of large scale glue defect inspection method |
| CN110286129A (en) * | 2019-07-12 | 2019-09-27 | 创新奇智(广州)科技有限公司 | Lighting device for magnetic shoe detection and the detection system for magnetic shoe detection |
| CN110470349A (en) * | 2019-09-20 | 2019-11-19 | 深圳市鑫荣精工科技有限公司 | A kind of precision CNC converted products quality determining method |
| CN113218961A (en) * | 2021-04-21 | 2021-08-06 | 中国科学院光电技术研究所 | Substrate defect detection device and method |
| CN113218961B (en) * | 2021-04-21 | 2023-08-11 | 中国科学院光电技术研究所 | Substrate defect detection device and method |
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Application publication date: 20161012 |